Reign of Fire (2002)

In modern-day London, young Quinn witnesses his mother awakening a colossal fire-breathing creature that has been dormant for centuries. Two decades later, the world is devastated by these beasts and their progeny. As a fire chief, Quinn leads the charge to protect his community from these monsters and ensure their survival in a harsh new reality. Their world is upended when a confident American, Van Zan, arrives with a plan to exterminate the creatures and reclaim their world.